feat: allow zip method different type

marcglasberg · Apr 14, 2024 · 43e5132 · 43e5132
1 parent 00f0ba9
commit 43e5132
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diff --git a/lib/src/ilist/ilist.dart b/lib/src/ilist/ilist.dart
@@ -1795,7 +1795,7 @@ abstract class IList<T> // ignore: must_be_immutable
       Iterable.generate(length, (index) => (index, _l[index])).toIList(config);
 
   /// Aggregate two sources trimming by the shortest source
-  Iterable<(T, T)> zip(Iterable<T> otherIterable) {
+  Iterable<(T, U)> zip<U>(Iterable<U> otherIterable) {
     final other = otherIterable.toList();
     final minLength = min(length, other.length);
     return Iterable.generate(minLength, (index) => (_l[index], other[index])).toIList(config);

diff --git a/test/ilist/ilist_test.dart b/test/ilist/ilist_test.dart
@@ -1567,6 +1567,18 @@ void main() {
           ('France', 'Paris'),
           ('Germany', 'Berlin'),
         ]));
+
+    // different type
+    final Iterable<(String, int)> zipped = countries.zip([10, 20, 30, 40]);
+    expect(
+        zipped,
+        IList([
+          ('France', 10),
+          ('Germany', 20),
+          ('Brazil', 30),
+          ('Japan', 40)
+        ]));
+    });
   });
 
   test("ZipAll with another source replacing with fill method value if available or else null", () {